let a : number = + 123;
console.log (a);
let b : number = + "abc";
console.log (b);
let c : number = + "456";
console.log (c);
let s : string = "hello";
let d : number = (+ s);
console.log (d);
let e : number = (+ new Number (+ 1));
console.log (e);
